NEC MultiSync 3D JC-1404HED Manuals

Manuals and User Guides for NEC MultiSync 3D JC-1404HED. We have 1 NEC MultiSync 3D JC-1404HED manual available for free PDF download: Service Manual

NEC MultiSync 3D JC-1404HED Service Manual

NEC MultiSync 3D JC-1404HED Service Manual (123 pages)

Brand: NEC | Category: Monitor | Size: 5.43 MB

Table of Contents

Trouble Shooting

28
- Table of Contents
  28
- 1 Raster
  
  29
- 2 Switching Regulator Unit Output Error
  
  30
  - MAIN PWB +Bline FAILURE
    32
    
    Line FAILURE
    32
    
    Line FAILURE
    33
- 3 Lack of Synchronization
  
  34
  - Horizontal
    34
  - Vertical
    35
- 4 Digital Control Error
  
  36
  - Digital Control Error
    37
  - User Control Error
    37
  - Memory Access Error
    37
- 5 Abnormal Picture
  
  38
  - Abnormal Horizontal Width
    38
  - Abnormal Vertical Size
    39
  - Abnormal Horizontal Position
    39
  - Abnormal Vertical Position
    40
  - Abnormal Vertical Scan
    40
  - Abnormal Video
    41
  - Side Pin Cushion Distortion Failure
    42
  - Poor Focus
    42
  - Impurity on Crt Screen
    43
Theory of Operation

44
- 1 Construction
  
  45
  - Crt
    45
  - Power Supply Circuit
    45
  - Deflection Circuit
    45
  - Interface Circuit
    46
  - Video Circuit
    46
  - Digital Control Circuit
    46
- 2 Circuit Description
  
  47
  - Power Supply Circuit
    47
    
    Switching Regulator Unit
    48
    
    Main DC/DC Converter
    51
    
    Chopper Regulator
    52
  - Deflection Circuit
    54
    
    Horizontal Deflection Unit
    54
    
    Vertical Deflection Circuit
    55
    
    Circuit
    56
  - Interface Circuit
    56
    
    Video Interface
    56
    
    Sync Interface
    57
  - Video Circuit
    58
  - Digital Control Circuit
    60
    
    Digital Control Unit
    60
    
    V-F/V Converter
    66
    
    PHASE Circuit
    66
    
    Size Circuit
    67
    
    Position Circuit
    68
    
    Size Circuit
    69

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